Originally Posted by ibuiltmine
Dont they have an enclosed primary belt from the factory?
Enclosed chain. One could do an enclosed belt conversion fairly cheap. The biggest part of the belt drive kit cost is the motor/trans plate. IMO it's best to stay with the factory chain primary in that case.
The Ultima drive kits are good, haven't seen any problems with the couple I installed. Make sure your year bike is covered by the kit your ordering and test fit everything before locking everything down. I had one that required a different compensator pulley than the kit came with. I called and they sent the correct one out ASAP.
Bandersnatch, the Dyna frame came out in '91. Are you sure that '90 isn't an FXR?
As far as the torque arm is concerned, Carlini has the only off the shelf product I know of, (I've seen a few custom made ones a logn time ago). It's blingy billet and costs $300. Add about $20 for your local powdercoater to de-bling it in black.